DKIM uses cryptographic signatures and public-key infrastructure to verify that an email message has not been altered during transit and that it truly came from the claimed sender. Email senders can use DKIM to sign their messages by adding a DKIM-Signature header field to the messages. Email receivers can then use the public key published in the DNS to verify the signature and check that the message has not been tampered with. 

Easy Steps to Setting up DKIM for Jira Cloud / Atlassian?

• Access your DNS administration interface.
• Go to the DNS records section.
• You must publish the following CNAME records in your DNS for Jira Cloud:

s1._domainkey    IN    CNAME    s1._domainkey.atlassian.net.

s2._domainkey    IN    CNAME    s2._domainkey.atlassian.net.

Your DKIM selectors are represented as (s1 and s2) above.

Use our free DKIM record lookup tool to validate the published DKIM record.

Enable DMARC for your domains to protect against spoofing. Sign up for a free trial today!

For more information on Jira Cloud / Atlassian DKIM setup, you can refer to their reference documentation

You might be interested in reading:

How to Set Up SPF for Jira Cloud / Atlassian? October 12, 2023